ccavenue payment integration error

Hi,

I have integrated ccavenue payment plugin with opencart. When i proceed the order at the checkout page, the page redirects to "www.ccavenue.com/errorPages/Error.jsp?e ... =44522-100" and also shows" CCAvenue Transaction Error Page" but with no error code. I have properly added merchant id and working key. Really I dont have any idea. Kindly help.